Thaumatrope

Thau"ma*trope

(th"m*trp), n. [Gr. qay^ma a wonder + tre`pein to turn.] (Opt.) An optical instrument or toy for showing the persistence of an impression upon the eyes after the luminous object is withdrawn.
[1913 Webster]

It consists of a card having on its opposite faces figures of two different objects, or halves of the same object, as a bird and a cage, which, when the card is whirled rapidly round a diameter by the strings that hold it, appear to the eye combined in a single picture, as of a bird in its cage.
[1913 Webster]

 

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Wed 12th December 2018